1010020323220 has 96 divisors (see below), whose sum is σ = 2258190305280. Its totient is φ = 378382233600.

The previous prime is 1010020323149. The next prime is 1010020323229. The reversal of 1010020323220 is 223230200101.

It is a junction number, because it is equal to n+sod(n) for n = 1010020323194 and 1010020323203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010020323229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25810189 + ... + 25849291.

It is an arithmetic number, because the mean of its divisors is an integer number (23522815680).

Almost surely, 2^{1010020323220} is an apocalyptic number.

1010020323220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1010020323220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1129095152640).

1010020323220 is an abundant number, since it is smaller than the sum of its proper divisors (1248169982060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1010020323220 is a wasteful number, since it uses less digits than its factorization.

1010020323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39905 (or 39903 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1010020323220 its reverse (223230200101), we get a palindrome (1233250523321).

The spelling of 1010020323220 in words is "one trillion, ten billion, twenty million, three hundred twenty-three thousand, two hundred twenty".